Question

我的文件流文件表有问题，当我在其上运行一个insert语句时，文件保存，但file_type列为null（显然无法手动更新，因为它是计算列）

DECLARE @counter INT, @maxPolicySectionId INT
DECLARE @name NVARCHAR(128)
DECLARE @file_stream VARBINARY(MAX)
DECLARE @path NVARCHAR(256)
DECLARE @command NVARCHAR(MAX)

DECLARE @fileTable TABLE(
name NVARCHAR(50),
filePath NVARCHAR(128),
polSecId INT
);

--...Populate @fileTable from database table...--

SELECT @counter = MIN(policySectionId), @maxPolicySectionId = MAX(policySectionId) FROM tblPolicySection

SET @name = (SELECT name FROM @fileTable WHERE polSecId = @counter)

SET @path = (SELECT filePath FROM @fileTable WHERE polSecId = @counter)
SET @path = REPLACE(@path, '192.168.0.6', 'meta-filesrv') 

--SET @file_type in Filetable somehow.. unable to perform UPDATE because it's a computed column

SET @command = N'SELECT @file_stream1 = CAST(bulkcolumn AS varbinary(MAX))
            from OPENROWSET(BULK ''' + @path + ''',
            SINGLE_BLOB) AS x'  

EXEC sp_executesql @command, N'@file_stream1 VARBINARY(MAX) OUTPUT',@file_stream1 = @file_stream OUTPUT

IF @path IS NOT NULL AND @name IS NOT NULL
BEGIN
    INSERT INTO BlobDocStore(
            name,
            file_stream
        )
        SELECT
            @name,
            @file_stream
 END

 SET @counter = @counter + 1

正如您所看到的，我正在将一个流传递给insert语句，该语句应尽我所能。我希望有人在过去有过这方面的经验。感谢。

Answer 1

file_type派生自指定的文件名。如果file_type列为NULL，则表明@name值没有文件扩展名。

Filestream Filetable问题而不是计算插入时的file_type列

1 个答案: